Giulio,
I had a brain fade....
I just realized, I only use the Shure A95 transformer when driving
the High Impedance input of my Collins. But that is something to
keep in mind.
The K3 input should accept the SM57 directly with the proper cable
wiring.
You are correct: your problem is not the microphone.
By the way, I get very good audio reports with mine.
Jim K9YC's suggestion to roll off the low end at 50Hz and 100Hz is a
good one.
The SM57 has quite a bit of proximity effect and you should keep your
distance to at least 3" or more.
I use a fairly large windscreen on mine as well.
Enjoy!
Cheers,
Ken N6TZV
On Feb 11, 2009, at 4:18 PM, [email protected] wrote:
Message: 17
Date: Wed, 11 Feb 2009 22:31:24 +0100
From: Giulio Pico - IW3HVB <[email protected]>
Subject: [Elecraft] Modulation on XV144 was: Dynamic mics on a K3
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
After a few good suggestions by Don, Jim and Fern I run a few more
tests, coming at the conclusion that the problem was not the MIC,
or its
interfacing with the K3 or the radio itself.
The audio on HF bands is simply perfect, with or without compression
(and comp acts exactly as it should).
But the problem on 144 MHz is still there, so the problem must be
on the
XV144. The Power supply is the same for both the radio and the
xverter,
tried switching and stabilized with no differences.
I've no idea where to look...... Changing the drive power (I'm using
the KXV3 module) does'nt produce any difference as well.
Any clues?
73 de Giulio IW3HVB
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